from django.shortcuts import render
from django.views import View
from django_redis import get_redis_connection
from django import http
import random,logging

from meiduo_project.utils.response_code import RETCODE
from verifications.libs.captcha.captcha import captcha
from verifications import constants
from celery_tasks.sms.tasks import ccp_send_sms_code
# Create your views here.
from verifications.libs.yuntongxun.ccp_sms import CCP


logger = logging.getLogger("django")


class ImageCodeView(View):
    """图形验证码"""
    def get(self, request, uuid):
        """
        :param request:请求对象
        :param uuid:唯一标识图形验证码所属于的用户
        :return:image/jpg
        """
        # 接收参数验证参数
        # 实现主体业务逻辑，生成图形验证码，保存，响应图形验证码
        # 生成图形验证码

        text, image = captcha.generate_captcha()

        # 保存图片验证码
        redis_conn = get_redis_connection('verify_code')
        redis_conn.setex('img_%s' % uuid, constants.IMAGE_CODE_REDIS_EXPIRES, text)

        # 响应图片验证码
        return http.HttpResponse(image, content_type='image/jpg')


class SMSCodeView(View):
    """短信验证码"""
    def get(self, request, mobile):
        """
        :param request:
        :param mobile:
        :return: JSON：
        """
        # 接收参数
        image_code_client = request.GET.get("image_code")
        uuid = request.GET.get("uuid")

        # 校验参数
        if not all([image_code_client, uuid]):
            return http.JsonResponse({'code': RETCODE.NECESSARYPARAMERR, 'errmsg': '缺少必传参数'})

        # 创建redis连接
        redis_conn = get_redis_connection('verify_code')
        # 提取，校验send_flag
        send_flag = redis_conn.get('send_flag_%s' % mobile)
        if send_flag:
            return http.JsonResponse({'code': RETCODE.THROTTLINGERR, 'errmsg': '发送短信过于频繁'})

        # 提取，删库，对比图形验证码
        redis_conn = get_redis_connection('verify_code')
        image_code_server=redis_conn.get('img_%s' % uuid)
        if image_code_server is None:
            return http.JsonResponse({'code': RETCODE.IMAGECODEERR, 'errmsg':"图形验证码已失效"})
        redis_conn.delete('img_%s' % uuid)

        image_code_server = image_code_server.decode()
        if image_code_client.lower() != image_code_server.lower():
            return http.JsonResponse({'code': RETCODE.IMAGECODEERR, 'errmsg':"图形验证码有误"})
        # 生成短信验证码
        sms_code = '%06d'%random.randint(0, 999999)
        logger.info(sms_code) # 手动输出日志，记录短信验证码

        # 创建Redis管道, pipeline操作Redis数据库
        pl = redis_conn.pipeline()
        # 将Redis请求添加到队列
        # 保存验证码
        pl.setex('sms_%s' % mobile, constants.SMS_CODE_REDIS_EXPIRES, sms_code)
        # 保存发送了验证码的标记，记录在redis
        pl.setex('send_flag_%s' % mobile, constants.SEND_SMS_CODE_INTERVAL, 1)
        # 执行请求
        pl.execute()

        # 发送验证码
        # 使用异步去了CCP().send_template_sms(mobile, [sms_code, constants.SMS_CODE_REDIS_EXPIRES // 60],constants.SEND_SMS_TEMPLATE_ID)
        # Celery异步发送短信验证码
        ccp_send_sms_code.delay(mobile, sms_code)


        #返回结果
        return http.JsonResponse({'code': RETCODE.OK, 'errmsg': '发送短信成功'})

